Fix app crashing when safeTransactions is undefined

src/logic/safe/transactions/awaitingTransactions.ts

@@ -6,6 +6,10 @@ export const getAwaitingTransactions = (allTransactions, cancellationTransaction
   }
 
   const allAwaitingTransactions = allTransactions.map((safeTransactions) => {
+    if (!safeTransactions) {
+      return []
+    }
+
     const nonCancelledTransactions = safeTransactions.filter((transaction) => {
       // If transactions are not executed, but there's a transaction with the same nonce EXECUTED later
       // it means that the transaction was cancelled (Replaced) and shouldn't get executed